#include "complain.h"
FILE *finput = NULL;
-FILE *foutput = NULL;
-FILE *fguard = NULL;
-FILE *fparser = NULL;
struct obstack action_obstack;
struct obstack attrs_obstack;
struct obstack table_obstack;
struct obstack defines_obstack;
+struct obstack guard_obstack;
+struct obstack output_obstack;
-/* File name specified with -o for the output file, or 0 if no -o. */
-char *spec_outfile;
+char *spec_outfile; /* for -o. */
+char *spec_file_prefix; /* for -b. */
+char *spec_name_prefix; /* for -p. */
char *infile;
char *attrsfile;
-static char *outfile;
-static char *defsfile;
-static char *tabfile;
-static char *guardfile;
-static char *actfile;
+static char *base_name;
+static char *short_base_name;
+
\f
+/*--------------------------.
+| Is SUFFIX ending STRING? |
+`--------------------------*/
+
+static int
+strsuffix (const char *string, const char *suffix)
+{
+ size_t string_len = strlen (string);
+ size_t suffix_len = strlen (suffix);
+ if (suffix_len <= string_len)
+ return !strcmp (string + string_len - suffix_len, suffix);
+ else
+ return 0;
+}
+
+
/*-----------------------------------------------------------------.
| Return a newly allocated string composed of the concatenation of |
-| the END1 first chars of STRING1, and STRING2. |
+| STRING1, and STRING2. |
`-----------------------------------------------------------------*/
static char *
-stringappend (const char *string1, int end1, const char *string2)
+stringappend (const char *string1, const char *string2)
{
- char *res;
+ size_t len = strlen (string1) + strlen (string2);
+ char *res = XMALLOC (char, len + 1);
char *cp;
- const char *cp1;
- int i;
-
- cp1 = string2;
- i = 0;
- while (*cp1++)
- i++;
-
- res = XCALLOC (char, i + end1 + 1);
-
- cp = res;
- cp1 = string1;
- for (i = 0; i < end1; i++)
- *cp++ = *cp1++;
-
- cp1 = string2;
- while ((*cp++ = *cp1++))
- ;
-
+ cp = stpcpy (res, string1);
+ cp = stpcpy (cp, string2);
return res;
}
| if fails. |
`-----------------------------------------------------------------*/
-static FILE *
+FILE *
xfopen (const char *name, const char *mode)
{
FILE *ptr;
| Try to close file PTR, and print an error message if fails. |
`-------------------------------------------------------------*/
-static int
+int
xfclose (FILE *ptr)
{
int result;
}
-static const char *
+/*------------------------------------------------------------------.
+| Return the path to the skeleton which locaction might be given in |
+| ENVVAR, otherwise return SKELETON. |
+`------------------------------------------------------------------*/
+
+const char *
skeleton_find (const char *envvar, const char *skeleton)
{
const char *res = getenv (envvar);
}
\f
-/*-----------------------------------------------------------------.
-| Open the input file. Look for the skeletons. Find the names of |
-| the output files. Prepare the obstacks. |
-`-----------------------------------------------------------------*/
+/*----------------------------------------.
+| Compute BASE_NAME and SHORT_BASE_NAME. |
+`----------------------------------------*/
-void
-open_files (void)
+/* FIXME: Should use xstrndup. */
+
+static void
+compute_base_names (void)
{
- char *name_base;
- int base_length;
- int short_base_length;
+ size_t base_length;
+ size_t short_base_length;
+
+ /* If --output=foo.c was specified (SPEC_OUTFILE == foo.c),
+ BASE_NAME and SHORT_BASE_NAME are `foo'.
+ If --output=foo.tab.c was specified, BASE_NAME is `foo.tab' and
+ SHORT_BASE_NAME is `foo'.
+
+ The precise -o name will be used for FTABLE. For other output
+ files, remove the ".c" or ".tab.c" suffix. */
if (spec_outfile)
{
- /* -o was specified. The precise -o name will be used for FTABLE.
- For other output files, remove the ".c" or ".tab.c" suffix. */
- name_base = spec_outfile;
#ifdef MSDOS
- strlwr (name_base);
+ strlwr (spec_outfile);
#endif /* MSDOS */
/* BASE_LENGTH includes ".tab" but not ".c". */
- base_length = strlen (name_base);
- if (!strcmp (name_base + base_length - 2, ".c"))
+ base_length = strlen (spec_outfile);
+ if (strsuffix (spec_outfile, ".c"))
base_length -= 2;
+ base_name = strndup (spec_outfile, base_length);
/* SHORT_BASE_LENGTH includes neither ".tab" nor ".c". */
short_base_length = base_length;
- if (!strncmp (name_base + short_base_length - 4, ".tab", 4))
- short_base_length -= 4;
- else if (!strncmp (name_base + short_base_length - 4, "_tab", 4))
+ if (strsuffix (base_name, ".tab") || strsuffix (base_name, "_tab"))
short_base_length -= 4;
+ short_base_name = strndup (spec_outfile, short_base_length);
+
+ return;
}
- else if (spec_file_prefix)
+
+ /* If --file-prefix=foo was specified, BASE_NAME and SHORT_BASE_NAME
+ are `foo'.
+
+ Construct names from it. */
+ if (spec_file_prefix)
{
- /* -b was specified. Construct names from it. */
- /* SHORT_BASE_LENGTH includes neither ".tab" nor ".c". */
- short_base_length = strlen (spec_file_prefix);
- /* Count room for `.tab'. */
- base_length = short_base_length + 4;
- name_base = XMALLOC (char, base_length + 1);
- /* Append `.tab'. */
- strcpy (name_base, spec_file_prefix);
- strcat (name_base, EXT_TAB);
#ifdef MSDOS
- strlwr (name_base);
+ strlwr (spec_file_prefix);
#endif /* MSDOS */
- }
- else
- {
- /* -o was not specified; compute output file name from input
- or use y.tab.c, etc., if -y was specified. */
+ short_base_name = xstrdup (spec_file_prefix);
- static char FIXED_NAME_BASE[] = "y.y";
+ base_name = XMALLOC (char,
+ strlen (short_base_name) + strlen (EXT_TAB) + 1);
+ stpcpy (stpcpy (base_name, short_base_name), EXT_TAB);
- name_base = yacc_flag ? FIXED_NAME_BASE : infile;
+ return;
+ }
- /* BASE_LENGTH gets length of NAME_BASE, sans ".y" suffix if any. */
+ /* If neither -o nor --file-prefix were specified, and the input
+ file is foo.y, BASE_NAME is `foo.tab', and SHORT_BASE_NAME is
+ `foo'.
- base_length = strlen (name_base);
- if (!strcmp (name_base + base_length - 2, ".y"))
- base_length -= 2;
- short_base_length = base_length;
+ If --yacc is used, do as if the input file was `y.y'. */
+ {
+ const char *name_base = yacc_flag ? "y.y" : infile;
- name_base = stringappend (name_base, short_base_length, EXT_TAB);
- base_length = short_base_length + 4;
- }
+ /* BASE_LENGTH gets length of BASE_NAME, sans ".y" suffix if any. */
- finput = xfopen (infile, "r");
+ base_length = strlen (name_base);
+ if (strsuffix (name_base, ".y"))
+ base_length -= 2;
+ short_base_length = base_length;
+ short_base_name = strndup (name_base, short_base_length);
- if (!no_parser_flag)
- fparser = xfopen (skeleton_find ("BISON_SIMPLE", BISON_SIMPLE), "r");
+ base_name = XMALLOC (char,
+ strlen (short_base_name) + strlen (EXT_TAB) + 1);
+ stpcpy (stpcpy (base_name, short_base_name), EXT_TAB);
- if (verbose_flag)
- {
- /* We used to use just .out if spec_name_prefix (-p) was used,
- but that conflicts with Posix. */
- outfile = stringappend (name_base, short_base_length, EXT_OUTPUT);
- foutput = xfopen (outfile, "w");
- }
+ return;
+ }
+}
- if (no_parser_flag)
- {
- /* use permanent name for actions file */
- actfile = stringappend (name_base, short_base_length, ".act");
- }
+/*-----------------------------------------------------------------.
+| Open the input file. Look for the skeletons. Find the names of |
+| the output files. Prepare the obstacks. |
+`-----------------------------------------------------------------*/
- if (defines_flag)
- {
- defsfile = stringappend (name_base, base_length, ".h");
- }
+void
+open_files (void)
+{
+ compute_base_names ();
- /* These are opened by `done' or `open_extra_files', if at all */
- if (spec_outfile)
- tabfile = spec_outfile;
- else
- tabfile = stringappend (name_base, base_length, ".c");
+ finput = xfopen (infile, "r");
- attrsfile = stringappend (name_base, short_base_length, EXT_STYPE_H);
- guardfile = stringappend (name_base, short_base_length, EXT_GUARD_C);
+ attrsfile = stringappend (short_base_name, EXT_STYPE_H);
/* Initialize the obstacks. */
obstack_init (&action_obstack);
obstack_init (&attrs_obstack);
obstack_init (&table_obstack);
obstack_init (&defines_obstack);
+ obstack_init (&guard_obstack);
+ obstack_init (&output_obstack);
}
-/*--------------------------------------------------------------------.
-| Open the output files needed only for the semantic parser. This |
-| is done when %semantic_parser is seen in the declarations section. |
-`--------------------------------------------------------------------*/
-
-void
-open_extra_files (void)
-{
- xfclose (fparser);
-
- if (!no_parser_flag)
- fparser = xfopen (skeleton_find ("BISON_HAIRY", BISON_HAIRY), "r");
- fguard = xfopen (guardfile, "w");
-}
-
-
/*-----------------------------------------------------.
| Close the open files, produce all the output files. |
`-----------------------------------------------------*/
void
output_files (void)
{
- xfclose (fguard);
xfclose (finput);
- xfclose (fparser);
- xfclose (foutput);
/* Output the main file. */
- obstack_save (&table_obstack, tabfile);
+ if (spec_outfile)
+ obstack_save (&table_obstack, spec_outfile);
+ else
+ obstack_save (&table_obstack, stringappend (base_name, ".c"));
/* Output the header file if wanted. */
if (defines_flag)
- obstack_save (&defines_obstack, defsfile);
+ obstack_save (&defines_obstack, stringappend (base_name, ".h"));
- /* If we output only the table, dump the actions in ACTFILE.
- */
+ /* If we output only the table, dump the actions in ACTFILE. */
if (no_parser_flag)
- obstack_save (&action_obstack, actfile);
+ obstack_save (&action_obstack, stringappend (short_base_name, ".act"));
/* If we produced a semantic parser ATTRS_OBSTACK must be dumped
into its own file, ATTTRSFILE. */
if (semantic_parser)
- obstack_save (&attrs_obstack, attrsfile);
+ {
+ obstack_save (&attrs_obstack, attrsfile);
+ obstack_save (&guard_obstack,
+ stringappend (short_base_name, EXT_GUARD_C));
+ }
+
+ if (verbose_flag)
+ /* We used to use just .out if spec_name_prefix (-p) was used, but
+ that conflicts with Posix. */
+ obstack_save (&output_obstack, stringappend (short_base_name, EXT_OUTPUT));
}
projects / bison.git / blobdiff